#3755B4#3755B4

#3755B4 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.1% C 0.155 H 267.2°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#3755B4
RGB	rgb(55, 85, 180)
HSL	hsl(226, 53%, 46%)
HSV	hsv(226, 69%, 71%)
CMYK	cmyk(69.4%, 52.8%, 0%, 29.4%)
CIE-LAB	lab(38.90, 21.35, -53.79)
CIE-LCH	lch(38.90, 57.88, 291.65°)
OKLab	oklab(48.11% -0.0077 -0.1546)
OKLCH	oklch(48.11% 0.155 267.2)
XYZ	xyz(13.0594, 10.6032, 44.5296)
Luminance	0.1061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755B4 #B49637

analogous

#3793B4 #3755B4 #5737B4

triadic

#3755B4 #B43755 #55B437

tetradic

#3755B4 #B43793 #B49637 #37B457

square

#3755B4 #B43793 #B49637 #37B457

split-complementary

#3755B4 #B45737 #93B437

monochromatic

#1A2956 #293F85 #3755B4 #5B77CD #8A9EDB

Accessibility & contrast

On white

6.73

#3755B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3755B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755B4

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755B4	#FFFFFF	#000000	##FFFFFF
##3755B4	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1662B7

Deuteranopia (green-blind)

#0056B2

Tritanopia (blue-blind)

#006C7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3755b4;
/* rgb */ color: rgb(55, 85, 180);
/* oklch */ color: oklch(48.1% 0.155 267.2);

Tailwind

colors: {
  custom: {
    50: '#7d84cb',
    500: '#3755b4',
    950: '#000000',
  },
}

SCSS

$custom: #3755b4;
$custom-light: #7d84cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3755b4",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 180
  },
  "hsl": {
    "h": 225.6,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.48112,
    "c": 0.1548,
    "h": 267.2
  },
  "luminance": 0.10605
}

Semantic roles & 50–950 ramp

primary

#3755B4

secondary

#C6B581

accent

#BA4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3755B4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →